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Subsequent events - Additional Information (Details) - Aerex Industries Inc [Member] - USD ($) | Jan. 24, 2020 | Feb. 11, 2016 | Dec. 31, 2019
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Subsequent Event [Line Items] |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 49.00% | 51.00% |
Consideration Transferred On Acquisition Of Manufacturing Reporting Unit | $ 8,500,000 |  |
Consolidated Water U S Holdings [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Noncontrolling Interest, Ownership Percentage by Parent | 100.00% |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 49.00% |  |
Consolidated Water U S Holdings [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 51.00%
Business Combination, Consideration Transferred |  | $ 7,700,000 |
Consideration Transferred On Acquisition Of Manufacturing Reporting Unit | $ 8,500,000 |  |

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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